Use list of integer type in a loop in python

I have the following code:

a=[]
b=[]

for s in range(10):
dw = s%5
if dw == 1:
WD = random.randint(60,100)
DD =[int(round(dc*WD,0)) for dc in [.2,.2,.2,.2,.2]]
for k in range(5):
a.append(DD[k])
print a
TCV = DD[dw]
DDPT = [int(round(pt*TCV)) for pt in [.3,.5,.2]]
for i in range(3):
b.append(DDPT[i])
for PT in range(3):
for p in DDPT[PT]:
print 't'